Question

A monochromator is mainly used in the above technique for which of the following purpose?

• A. It increases the frequency of incident light
• B. It transmits a narrow portion of the optical signal chosen from a wider range of wavelengths
• C. It decreases the frequency of incident light
• D. All of the above

Answer 1

The correct option is B It transmits a narrow portion of the optical signal chosen from a wider range of wavelengths

A monochromator is an optical device which transmits a selectable narrow band of wavelengths of light or other radiation chosen from a wider range of wavelengths available at the input.

So, the correct answer is 'It transmits a narrow portion of the optical signal chosen from a wider range of wavelengths'